ES2539307T3 - Exhaust gas purification device - Google Patents

Exhaust gas purification device Download PDF

Info

Publication number
ES2539307T3
ES2539307T3 ES09831864.5T ES09831864T ES2539307T3 ES 2539307 T3 ES2539307 T3 ES 2539307T3 ES 09831864 T ES09831864 T ES 09831864T ES 2539307 T3 ES2539307 T3 ES 2539307T3
Authority
ES
Spain
Prior art keywords
exhaust gas
unit
concentration
urea water
urea
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
ES09831864.5T
Other languages
Spanish (es)
Inventor
Masazumi Tanoura
Kenji Muta
Minoru Danno
Masatoshi Katsuki
Yuuko Ujihara
Daishi Ueno
Takashi Fujinaga
Eiji Kato
Shinichiro Asami
Tadashi Aoki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Application granted granted Critical
Publication of ES2539307T3 publication Critical patent/ES2539307T3/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/90—Injecting reactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9459—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
    • B01D53/9477—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on separate bricks, e.g. exhaust systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9495—Controlling the catalytic process
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/105—General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2046—Periodically cooling catalytic reactors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/206—Ammonium compounds
    • B01D2251/2067—Urea
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1021—Platinum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/50—Zeolites
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
    • F01N2550/02—Catalytic activity of catalytic converters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
    • F01N2550/22—Monitoring or diagnosing the deterioration of exhaust systems of electric heaters for exhaust systems or their power supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
    • F01N2560/021—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting ammonia NH3
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
    • F01N2560/026—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting NOx
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/14—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics having more than one sensor of one kind
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
    • F01N2900/1402—Exhaust gas composition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Toxicology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Materials Engineering (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

Un dispositivo de purificación de gas de escape (50) para reducir los óxidos de nitrógeno contenidos en el gas de escape descargado desde un motor de combustión interna (12), que comprende: una tubería de exhaustación (14) para guiar el gas de escape descargado desde el motor de combustión interna (12); una unidad de inyección (22) de agua de urea para inyectar agua de urea en la tubería de exhaustación (14); una unidad catalítica (26) que incluye un catalizador SCR de urea para promover una reacción entre el amoniaco producido a partir del agua de urea inyectada 10 y los óxidos de nitrógeno, e incluye un mecanismo de soporte dispuesto dentro de la tubería de exhaustación (14) para soportar el catalizador SCR de urea en la tubería de exhaustación (14), y está dispuesto en un lado corriente abajo en relación con una posición donde el agua de urea se inyecta en una dirección de flujo del gas de escape; una unidad de medición de concentración de amoniaco (28) dispuesta en un lado corriente abajo con respecto a la unidad catalítica (26) en una dirección del flujo del gas de escape para medir una concentración de amoniaco en el gas de escape que ha pasado a través del catalizador SCR de urea; una unidad de control (30) para controlar la inyección de agua de urea mediante la unidad de inyección (22) de agua de urea basándose en la concentración de amoniaco medida mediante la unidad de medición de concentración de amoniaco (28); una unidad de ajuste de temperatura (62) para ajustar una temperatura de una trayectoria de flujo de gas de escape entre la unidad de inyección (22) de agua de urea y la unidad catalítica (26) en una dirección de flujo del gas de escape; caracterizado por que el dispositivo comprende: al menos una de una unidad de medición de concentración de ácido isociánico (56) para medir una concentración de ácido isociánico en el gas de escape y una unidad de medición de concentración de amoniaco de pretratamiento (54) para medir una concentración de amoniaco en el gas de escape, dispuesta entre la unidad de inyección (22) de agua de urea y la unidad catalítica (26) en una dirección de flujo del gas de escape; y por que: la unidad de control (30) se configura para provocar que la unidad de ajuste de temperatura (62) eleve la temperatura de la trayectoria de flujo del gas de escape cuando una concentración de ácido isociánico medida mediante la unidad de medición de concentración de ácido isociánico (56) sobrepasa un valor predeterminado o cuando una concentración de amoniaco medida mediante la unidad de medición de concentración de amoniaco de pretratamiento (54) es inferior a un valor predeterminado.An exhaust gas purification device (50) for reducing the nitrogen oxides contained in the exhaust gas discharged from an internal combustion engine (12), comprising: an exhaust pipe (14) for guiding the exhaust gas discharged from the internal combustion engine (12); a urea water injection unit (22) for injecting urea water into the exhaust pipe (14); a catalytic unit (26) that includes a SCR urea catalyst to promote a reaction between the ammonia produced from injected urea water 10 and the nitrogen oxides, and includes a support mechanism disposed within the exhaust pipe (14 ) to support the urea SCR catalyst in the exhaust pipe (14), and is disposed on a downstream side in relation to a position where the urea water is injected in a flow direction of the exhaust gas; an ammonia concentration measurement unit (28) disposed on a downstream side with respect to the catalytic unit (26) in a direction of the flow of the exhaust gas to measure an ammonia concentration in the exhaust gas that has passed through the urea SCR catalyst; a control unit (30) for controlling the injection of urea water by means of the urea water injection unit (22) based on the concentration of ammonia measured by the ammonia concentration measurement unit (28); a temperature adjustment unit (62) for adjusting a temperature of an exhaust gas flow path between the urea water injection unit (22) and the catalytic unit (26) in an exhaust gas flow direction ; characterized in that the device comprises: at least one of an isocyanic acid concentration measurement unit (56) for measuring a concentration of isocyanic acid in the exhaust gas and a pretreatment ammonia concentration measurement unit (54) for measuring an ammonia concentration in the exhaust gas, disposed between the urea water injection unit (22) and the catalytic unit (26) in a flow direction of the exhaust gas; and why: the control unit (30) is configured to cause the temperature adjustment unit (62) to raise the temperature of the flow path of the exhaust gas when a concentration of isocyanic acid measured by the measurement unit of Isocyanic acid concentration (56) exceeds a predetermined value or when an ammonia concentration measured by the pretreatment ammonia concentration measurement unit (54) is less than a predetermined value.

Description

imagen1image 1

imagen2image2

imagen3image3

imagen4image4

imagen5image5

imagen6image6

imagen7image7

imagen8image8

imagen9image9

5 5

15 fifteen

25 25

35 35

45 Four. Five

55 55

65 65

E09831864 E09831864

11-06-2015 06-11-2015

La unidad de medición de concentración de óxido de nitrógeno tratado 60 está dispuesta en la tubería de exhaustación 14 en el lado corriente abajo de la unidad catalítica SCR de urea 26 en la trayectoria de exhaustación del gas de escape, para medir la concentración de óxidos de nitrógeno en el gas de escape que ha pasado a través de la unidad catalítica SCR de urea 26. Un sensor que tiene la misma configuración que el de la unidad de medición de concentración de óxido de nitrógeno de pretratamiento 58 puede usarse como la unidad de medición de concentración de óxido de nitrógeno tratado 60. La unidad de medición de concentración de óxido de nitrógeno tratado 60 mide continuamente la concentración de óxidos de nitrógeno contenidos en el gas de escape que ha pasado a través de la unidad catalítica SCR de urea 26 y transmite un resultado de medición a la unidad de control The treated nitrogen oxide concentration measurement unit 60 is disposed in the exhaust pipe 14 on the downstream side of the urea SCR catalytic unit 26 in the exhaust gas exhaust path, to measure the concentration of oxides of nitrogen in the exhaust gas that has passed through the urea SCR catalytic unit 26. A sensor having the same configuration as that of the pretreatment nitrogen oxide concentration measurement unit 58 can be used as the measurement unit of treated nitrogen oxide concentration 60. The treated unit of measured nitrogen oxide concentration 60 continuously measures the concentration of nitrogen oxides contained in the exhaust gas that has passed through the SCR catalytic unit of urea 26 and transmits a measurement result to the control unit

64. 64.

La unidad de ajuste de temperatura 62 se proporciona en la tubería de exhaustación 14 en el lado corriente arriba de la unidad catalítica SCR de urea 26 en la trayectoria de exhaustación del gas de escape, específicamente, en la tubería de exhaustación 14 entre la unidad de inyección 22 y la unidad catalítica SCR de urea 26, para ajustar la temperatura del gas de escape que fluye en la tubería de exhaustación 14. La unidad de ajuste de temperatura 62 calienta o enfría el gas de escape que fluye en la tubería de exhaustación 14 calentando o enfriando la tubería de exhaustación 14, para ajustar la temperatura del gas de escape. Pueden usarse diversos mecanismos de calentamiento y refrigeración tales como un calentador, un elemento Peltier, un dispositivo de refrigeración por aire, y similares como la unidad de ajuste de temperatura 62. The temperature adjustment unit 62 is provided in the exhaust pipe 14 on the upstream side of the urea SCR catalytic unit 26 in the exhaust gas exhaust path, specifically, in the exhaust pipe 14 between the exhaust unit. injection 22 and the urea SCR catalytic unit 26, to adjust the temperature of the exhaust gas flowing in the exhaust pipe 14. The temperature adjustment unit 62 heats or cools the exhaust gas flowing in the exhaust pipe 14 by heating or cooling the exhaust pipe 14, to adjust the temperature of the exhaust gas. Various heating and cooling mechanisms such as a heater, a Peltier element, an air cooling device, and the like can be used as the temperature adjustment unit 62.

La unidad de control 64 ajusta la cantidad de inyección de agua de urea mediante la unidad de inyección 22 basándose en los resultados de medición transmitidos desde la unidad de medición de concentración 28, la unidad de medición de concentración de óxido de nitrógeno de pretratamiento 58 y la unidad de medición de concentración de óxido de nitrógeno tratado 60, y ajusta la temperatura del gas de escape mediante la unidad de ajuste de temperatura 62 basándose en los resultados de medición transmitidos desde la unidad de medición de concentración de amoniaco de pretratamiento 54 y la unidad de medición de concentración de ácido isociánico 56. The control unit 64 adjusts the amount of urea water injection by the injection unit 22 based on the measurement results transmitted from the concentration measurement unit 28, the pretreatment nitrogen oxide concentration measurement unit 58 and the treated nitrogen oxide concentration measurement unit 60, and adjusts the temperature of the exhaust gas by means of the temperature adjustment unit 62 based on the measurement results transmitted from the pretreatment ammonia concentration measurement unit 54 and the unit of measurement of concentration of isocyanic acid 56.

El ajuste de la cantidad de inyección de agua de urea realizado mediante la unidad de control 64 se explicará primero. La unidad de control 64 configura la cantidad de inyección de agua de urea para que la concentración de amoniaco en el gas de escape que ha pasado a través de la unidad catalítica SCR de urea 26 transmitida desde la unidad de medición de concentración 28 sea igual o inferior al valor diana y la concentración de óxidos de nitrógeno en el gas de escape que ha pasado de la unidad catalítica SCR de urea 26 transmitida desde la unidad de medición de concentración de óxido de nitrógeno tratado 60 sea igual o inferior al valor diana. Además, la unidad de control 64 calcula una cantidad de amoniaco necesaria para purificar los óxidos de nitrógeno contenidos en el gas de escape basándose en la concentración de óxidos de nitrógeno en el gas de escape antes de pasar a través de la unidad catalítica SCR de urea 26 transmitida desde la unidad de medición de concentración de óxido nitrógeno de pretratamiento 58. Un ejemplo de un método de control se explica a continuación en detalle en referencia a la Figura The adjustment of the amount of urea water injection performed by the control unit 64 will be explained first. The control unit 64 sets the amount of urea water injection so that the concentration of ammonia in the exhaust gas that has passed through the urea SCR catalytic unit 26 transmitted from the concentration measurement unit 28 is equal or less than the target value and the concentration of nitrogen oxides in the exhaust gas that has passed from the urea SCR catalytic unit 26 transmitted from the treated nitrogen oxide concentration measurement unit 60 is equal to or less than the target value. In addition, the control unit 64 calculates an amount of ammonia necessary to purify the nitrogen oxides contained in the exhaust gas based on the concentration of nitrogen oxides in the exhaust gas before passing through the urea SCR catalytic unit 26 transmitted from the pretreatment nitrogen oxide concentration measurement unit 58. An example of a control method is explained in detail below in reference to Figure

6. La Figura 6 es un diagrama de flujo de un ejemplo del método de control de la cantidad de inyección de agua de urea realizado mediante la unidad de control 64. En el diagrama de flujo mostrado en la Figura 6, se muestra un método de control para controlar la cantidad de inyección de agua de urea para que la concentración de amoniaco y la concentración de óxidos de nitrógeno en el gas de escape que ha pasado a través de la unidad catalítica SCR de urea 26 sean adecuadas, en el que no se toma en consideración controlar la cantidad de inyección de agua de urea basándose en la concentración de óxidos de nitrógeno en el gas de escape antes de pasar a través de la unidad catalítica SCR de urea 26. 6. Figure 6 is a flow chart of an example of the method of controlling the amount of urea water injection performed by the control unit 64. In the flow chart shown in Figure 6, a method of control to control the amount of urea water injection so that the concentration of ammonia and the concentration of nitrogen oxides in the exhaust gas that has passed through the urea SCR catalytic unit 26 are adequate, in which no It takes into consideration controlling the amount of urea water injection based on the concentration of nitrogen oxides in the exhaust gas before passing through the urea SCR catalytic unit 26.

En primer lugar, cuando la concentración de amoniaco medida mediante la unidad de medición de concentración 28 y la concentración de óxidos de nitrógeno (NOx) medida mediante la unidad de medición de concentración de óxido de nitrógeno tratado 60 se introducen en la unidad de control 64, la unidad de control 64 determina si la concentración de amoniaco medida es mayor que un valor diana en la Etapa S30. Cuando se ha determinado que laconcentración de amoniaco medida en la Etapa S30 es mayor que el valor diana (SÍ), la unidad de control 64 continúa con la Etapa S32 para determinar si la concentración medida de óxidos de nitrógeno (NOx) es menor que el valor diana. First, when the concentration of ammonia measured by the concentration measurement unit 28 and the concentration of nitrogen oxides (NOx) measured by the concentration unit of treated nitrogen oxide 60 are introduced into the control unit 64 , the control unit 64 determines if the measured ammonia concentration is greater than a target value in Step S30. When it has been determined that the ammonia concentration measured in Step S30 is greater than the target value (YES), the control unit 64 continues with Step S32 to determine if the measured concentration of nitrogen oxides (NOx) is less than target value

Cuando se ha determinado que la concentración medida de óxidos de nitrógeno (NOx) es inferior que el valor diana(SÍ) en la Etapa S32, la unidad de control 64 disminuye la cantidad de inyección de agua de urea actualmente establecida en una cantidad determinada en la Etapa S38. Es decir, la unidad de control 64 disminuye la cantidad de agua de urea que se inyecta desde la unidad de inyección 22 en una cantidad determinada. La unidad de control 64 continúa entonces con la Etapa S44. Cuando se ha determinado que la concentración medida de óxido de nitrógeno (NOx) es igual o mayor que el valor diana (NO) en la Etapa S32, la unidad de control 64 realiza un proceso de restauración en la Etapa S36, y continúa con la Etapa S44. El proceso de restauración es para restaurar la energía catalítica de la unidad catalítica SCR de urea 26, y por ejemplo, para calentar el catalizador SCR de urea de la unidad catalítica SCR de urea 26. Por ejemplo, puede usarse un calentador como una unidad de calentamiento que calienta el catalizador SCR de urea. Además, la unidad de control puede cambiar las condiciones de combustión del motor diésel 12 para elevar la temperatura del gas de escape. De esta manera, cuando tanto la concentración de amoniaco como la concentración de óxidos de nitrógeno son iguales o mayores que los valores diana, la unidad de control determina que la energía catalítica de la unidad catalítica SCR de urea 26 se deteriora y una reacción entre el amoniaco y los óxidos de nitrógeno no ocurre apropiadamente, y se lleva a cabo el proceso de restauración, para When it has been determined that the measured concentration of nitrogen oxides (NOx) is lower than the target value (YES) in Step S32, the control unit 64 decreases the amount of urea water injection currently set by a given amount in Stage S38. That is, the control unit 64 decreases the amount of urea water that is injected from the injection unit 22 by a certain amount. The control unit 64 then continues with Step S44. When it has been determined that the measured concentration of nitrogen oxide (NOx) is equal to or greater than the target value (NO) in Step S32, the control unit 64 performs a restoration process in Step S36, and continues with the Stage S44 The restoration process is to restore the catalytic energy of the urea SCR catalytic unit 26, and for example, to heat the urea SCR catalyst of the urea SCR catalytic unit 26. For example, a heater can be used as a unit of heating that heats the SCR urea catalyst. In addition, the control unit can change the combustion conditions of diesel engine 12 to raise the temperature of the exhaust gas. Thus, when both the concentration of ammonia and the concentration of nitrogen oxides are equal to or greater than the target values, the control unit determines that the catalytic energy of the urea SCR catalytic unit 26 deteriorates and a reaction between the Ammonia and nitrogen oxides do not occur properly, and the restoration process is carried out, to

11 eleven

imagen10image10

imagen11image11

imagen12image12

imagen13image13

Claims (1)

imagen1image 1
ES09831864.5T 2008-12-08 2009-12-04 Exhaust gas purification device Active ES2539307T3 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2008312631 2008-12-08
JP2008312631A JP5232613B2 (en) 2008-12-08 2008-12-08 Exhaust gas purification device
PCT/JP2009/070392 WO2010067760A1 (en) 2008-12-08 2009-12-04 Exhaust gas purifying device

Publications (1)

Publication Number Publication Date
ES2539307T3 true ES2539307T3 (en) 2015-06-29

Family

ID=42242748

Family Applications (1)

Application Number Title Priority Date Filing Date
ES09831864.5T Active ES2539307T3 (en) 2008-12-08 2009-12-04 Exhaust gas purification device

Country Status (10)

Country Link
US (1) US8607547B2 (en)
EP (1) EP2357331B1 (en)
JP (1) JP5232613B2 (en)
KR (1) KR101288784B1 (en)
CN (1) CN102245868B (en)
CA (1) CA2745623C (en)
DK (1) DK2357331T3 (en)
ES (1) ES2539307T3 (en)
RU (1) RU2487253C2 (en)
WO (1) WO2010067760A1 (en)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5276460B2 (en) * 2009-01-30 2013-08-28 三菱重工業株式会社 Exhaust gas purification device
US8424292B2 (en) * 2009-12-31 2013-04-23 General Electric Company Systems and apparatus relating to the monitoring and/or controlling of selective catalytic reduction processes
JP5337077B2 (en) 2010-02-26 2013-11-06 三菱重工業株式会社 Denitration device control device, denitration device equipped with the same, boiler plant equipped with the same, and denitration device control method
US20110262333A1 (en) * 2010-04-23 2011-10-27 Peerless Mfg. Co. Controlling ammonia flow in a selective catalytic reduction system during transient non-steady-state conditions
KR101209734B1 (en) * 2010-09-20 2012-12-07 현대자동차주식회사 Quality determination method of urea solution and purification system performing the method
US20120282564A1 (en) * 2011-05-03 2012-11-08 Electric Power Research Institute, Inc. METHODS FOR REDUCING NOx IN SCR FOSSIL-FUEL FIRED BOILERS
CN103874912B (en) 2011-10-12 2016-09-21 株式会社堀场制作所 Gas analyzing apparatus
JP5752067B2 (en) * 2012-02-14 2015-07-22 株式会社堀場製作所 Exhaust gas sampling device
US20130305728A1 (en) * 2012-05-15 2013-11-21 General Electric Company Systems and Methods for Minimizing Coking in Gas Turbine Engines
US9388978B1 (en) 2012-12-21 2016-07-12 Mitsubishi Hitachi Power Systems Americas, Inc. Methods and systems for controlling gas temperatures
US9273612B2 (en) * 2013-01-23 2016-03-01 Siemens Aktiengesellschaft Method of operating a gas turbine for reduced ammonia slip
DE102013108158A1 (en) * 2013-07-30 2015-02-19 Emitec Gesellschaft Für Emissionstechnologie Mbh Method of manufacturing a tank with a calibrated sensor
JP6037037B2 (en) * 2013-09-25 2016-11-30 トヨタ自動車株式会社 Sensor abnormality diagnosis device
US9429060B2 (en) 2013-10-28 2016-08-30 Cummins Emission Solutions Inc. Systems and methods for control of engine NOx emissions using liquid and dry reductant sources
JP6206131B2 (en) * 2013-11-27 2017-10-04 トヨタ自動車株式会社 Electric heating type exhaust gas purification system
CA2939057A1 (en) * 2014-04-29 2015-11-05 Humedics Gmbh Method for determining the temperature of an infrared-active gas by means of infrared spectroscopy
US9845717B2 (en) * 2014-10-28 2017-12-19 Ford Global Technologies, Llc Systems and methods for managing diesel exhaust fluid stratification
CN105736094A (en) * 2016-04-12 2016-07-06 苏州水木康桥环境工程技术有限公司 Gaseous ammonia generating system used for marine tail gas purification device
CN106703950A (en) * 2017-03-10 2017-05-24 河北索奇汽车电子科技有限公司 Independent SCR aftertreatment system and method
RU2760254C2 (en) * 2017-04-26 2021-11-23 Хальдор Топсёэ А/С Method and system for removing solid particles and nitrogenous compounds from flue gas using ceramic filter and scr catalyst
CN106988839A (en) * 2017-05-26 2017-07-28 凯龙高科技股份有限公司 Meet the diesel engine post-processing system of in-use automotive NOx and PM emission control
CN107191251A (en) * 2017-05-26 2017-09-22 凯龙高科技股份有限公司 A kind of diesel engine post-processing system for meeting the discharge of state six
WO2020071570A1 (en) * 2018-10-05 2020-04-09 한국생산기술연구원 Method for two-dimensional measurement of concentration and temperature of fine dust precursor material and active control thereof
JP7249165B2 (en) * 2019-02-20 2023-03-30 三菱重工業株式会社 Monitoring device, monitoring method and program
KR102111503B1 (en) * 2019-05-14 2020-05-15 대우조선해양 주식회사 Fuel Supply System of Eco-friendly Ship
SG11202112322QA (en) * 2019-05-14 2021-12-30 Daewoo Shipbuilding & Marine Fuel supply system for environment-friendly ship
CN110159407B (en) * 2019-05-24 2021-03-30 南通迈程汽车技术有限公司 Processing device for abnormal emission of automobile exhaust
CN110206623A (en) * 2019-06-25 2019-09-06 三河市科达科技有限公司 A kind of motor exhaust post-processing control system and control method
KR102249936B1 (en) * 2019-06-26 2021-05-07 한국교통대학교산학협력단 Monitoring Method of Nitrogen Oxide Exhaust Gas Using Universal Nitrogen Oxide Sensor
KR102252560B1 (en) * 2020-02-25 2021-05-17 한국해양대학교 산학협력단 Method and apparatus for analyzing filter performance in real time using optical measurement method
CN112879129B (en) * 2021-01-25 2022-10-21 凯龙高科技股份有限公司 NH3 urea injection control method for quick storage under low-temperature working condition of SCR system
CN113144843A (en) * 2021-03-16 2021-07-23 国家能源集团国源电力有限公司 Ammonia spraying control method and device
CN113107655A (en) * 2021-05-20 2021-07-13 潍柴动力股份有限公司 Control method and device for urea injection amount of SCR system, electronic control unit and medium

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6429610A (en) * 1987-07-22 1989-01-31 Mazda Motor Exhaust gas purifier for alcohol engine
US5233934A (en) * 1992-08-20 1993-08-10 Wahlco Environmental Systems, Inc. Control of NOx reduction in flue gas flows
US5809775A (en) 1997-04-02 1998-09-22 Clean Diesel Technologies, Inc. Reducing NOx emissions from an engine by selective catalytic reduction utilizing solid reagents
EP0969915A1 (en) 1997-12-12 2000-01-12 FEV Motorentechnik GmbH Method for reducing nitrogen oxides in exhaust gases containing oxygen, especially exhaust gases from internal combustion engines
JP2001000840A (en) 1999-06-21 2001-01-09 Toyota Central Res & Dev Lab Inc Exhaust gas purifying device
US6725651B2 (en) 2000-11-16 2004-04-27 Toyota Jidosha Kabushiki Kaisha Reducing agent for emission control system, reducing-agent supply device, and emission control system using the reducing agent
JP2002266627A (en) 2001-03-13 2002-09-18 Toyota Motor Corp Exhaust emission control device for internal combustion engine
DE10206028A1 (en) * 2002-02-14 2003-08-28 Man Nutzfahrzeuge Ag Process and apparatus for producing ammonia
JP3951774B2 (en) 2002-03-29 2007-08-01 三菱ふそうトラック・バス株式会社 NOx purification device for internal combustion engine
JP4114389B2 (en) 2002-04-22 2008-07-09 三菱ふそうトラック・バス株式会社 Exhaust purification device
US6993900B2 (en) * 2002-10-21 2006-02-07 Ford Global Technologies, Llc Exhaust gas aftertreatment systems
JP4509495B2 (en) * 2003-05-21 2010-07-21 三菱ふそうトラック・バス株式会社 Exhaust gas purification device for internal combustion engine
JP4792696B2 (en) 2003-12-15 2011-10-12 Ｊｆｅエンジニアリング株式会社 Denitration control method, denitration control device and program thereof
DE102004046639A1 (en) * 2004-09-25 2006-03-30 Robert Bosch Gmbh Method for operating an internal combustion engine and device for carrying out the method
JP4290109B2 (en) * 2004-10-29 2009-07-01 日産ディーゼル工業株式会社 Exhaust purification equipment
US20070044456A1 (en) 2005-09-01 2007-03-01 Devesh Upadhyay Exhaust gas aftertreatment systems
JP5296291B2 (en) 2005-12-08 2013-09-25 いすゞ自動車株式会社 Exhaust gas purification system
KR100680792B1 (en) * 2005-12-09 2007-02-08 현대자동차주식회사 Method and apparatus for controlling regeneration of simultaneous nox-pm reduction apparatus having lean nox trap and catalytic particulate filter
US20070137181A1 (en) 2005-12-16 2007-06-21 Devesh Upadhyay Exhaust gas aftertreatment systems
JP2007321647A (en) * 2006-05-31 2007-12-13 Hitachi Ltd Exhaust gas treatment apparatus for engine
DE102006027357B4 (en) * 2006-06-13 2015-12-03 Volkswagen Ag Method for operating an SCR catalytic converter and exhaust system
US7526950B2 (en) 2007-01-31 2009-05-05 Ford Global Technologies, Llc Emission control diagnostic system and method
KR100851474B1 (en) 2007-08-27 2008-08-08 현대자동차주식회사 Method for detecting incorrect reducing agent for urea-scr system
JP4986839B2 (en) 2007-12-27 2012-07-25 日野自動車株式会社 Exhaust treatment device
US8397489B2 (en) * 2008-09-10 2013-03-19 Ford Global Technologies, Llc Engine idling duration control

Also Published As

Publication number Publication date
CN102245868B (en) 2013-09-18
CA2745623C (en) 2013-09-24
RU2011122981A (en) 2012-12-20
JP2010133393A (en) 2010-06-17
KR20110082614A (en) 2011-07-19
CN102245868A (en) 2011-11-16
CA2745623A1 (en) 2010-06-17
JP5232613B2 (en) 2013-07-10
KR101288784B1 (en) 2013-07-22
WO2010067760A1 (en) 2010-06-17
EP2357331A1 (en) 2011-08-17
DK2357331T3 (en) 2015-06-22
US20110239629A1 (en) 2011-10-06
EP2357331A4 (en) 2013-07-24
US8607547B2 (en) 2013-12-17
RU2487253C2 (en) 2013-07-10
EP2357331B1 (en) 2015-05-06

Similar Documents

Publication Publication Date Title
ES2539307T3 (en) Exhaust gas purification device
JP4438828B2 (en) Exhaust gas purification device for internal combustion engine
CA2748865C (en) Flue gas purifying device
US9133749B2 (en) Ammonia storage set-point control for selective catalytic reduction applications
US8429898B2 (en) Selective catalytic reduction (SCR) catalyst depletion control systems and methods
WO2009050948A1 (en) Controller of reducing agent supply unit and method of controlling the same
US20150377102A1 (en) System and method for controlling and diagnosing passive storage devices in exhaust aftertreatment systems
US8978367B2 (en) Exhaust gas purifying system of internal combustion engine
JP5422215B2 (en) Exhaust gas purification device
US20110311420A1 (en) Selective catalytic reduction (scr) catalyst depletion control systems and methods
US8931265B2 (en) Closed loop temperature control in the SCR warm up mode to reduce emission variation
RU2013142310A (en) METHOD FOR SUBMITTING THERMAL ENERGY TO A DEVICE FOR NEUTRALIZING EXHAUST GAS, PLACED IN THE OUTLET OF THE INTERNAL COMBUSTION ENGINE
JP2010261423A (en) Exhaust emission control device of internal combustion engine
EP3093461B1 (en) Exhaust purification apparatus for engine
JP2011047384A (en) Exhaust emission control device
JP2013130072A (en) Exhaust emission control device and method of internal combustion engine
US10443465B2 (en) Engine exhaust system and control system for an engine exhaust system
KR102697582B1 (en) Automobile exhaust gas treatment system
KR20120128000A (en) Exhaust gas processing device
JP7347345B2 (en) Purification control device
JP2013189882A (en) Exhaust gas purification device
PL210277B1 (en) Method for testing cathalytic layers